model rocket is launched from a raised platform at a speed of 76 feet per second. Its height in feet is given by h(t)=-16t^2+76t+24 (t=seconds after launch) What is the maximum height reached by the rocket? and what time does it meet maximum height? And how long is the rocket in the air?​

Hello!

This is a question relating a quadratic equation to the vertex and roots.

Since this parabola has a negative a value, the vertex will be the maximum height that this rocket reaches.

We can find the vertex (h,k) with the following equations.

We can interpret the values like this:

At seconds after the rocket was launched, the rocket reached its maximum height of feet.

Since the y-intercept is at and this is a negative parabola, there will only be one positive root, which will be how long our rocket is in the air.

Use the quadratic formula.

Since we are searching for our positive root, this rocket is in the air for 5.407 seconds.

Hope this helps!

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y

the central idea is that:

individuals should refuse to cooperate with institutions they believe unjust.

thoreau felt  that governments were more often agents of corruption than justice, even democracies, and that just because the majority feels a certain way does not make it just or correct in absolute terms. he uses the fact that slavery exists in our democracy to support this idea.

he goes on to say that, as a result, people should live true to their own internal laws regarding right and wrong, as a product of reflection and a moral life, rather than following every law that society imposes. 

step-by-step explanation: